| 释义 |
photodynamic, a.|ˌfəʊtəʊdaɪˈnæmɪk|
[f. photo- 1 + dynamic a.]
a. Pertaining or relating to the energy of light.
1893Syd. Soc. Lex., Photodynamic, belonging to the energy of light-rays.
b. [after G. photodynamisch (H. von Tappeiner 1904, in Münch. med. Wochenschr. 19 Apr. 714/1).] Involving or causing a toxic response to light, esp. ultraviolet light.
1909Jrnl. Chem. Soc. XCVI. ii. 925 Extracts in methyl alcohol of various etiolated plants invariably showed a distinct photodynamic action on suspensions of red-blood corpuscles. 1937Ann. Reg. 1936 59 Advance was made in the understanding of the photodynamic inactivation of viruses and bacteria. 1965Seliger & McElroy Light v. 327 Calcutt (1954) found a large group of carcinogens, other than the polycyclic hydrocarbons, that was also photodynamic. 1973Daily Colonist (Victoria, B.C.) 16 Nov. 5/5 The ‘photodynamic therapy’ may provide a new approach to treating several human cancers. 1974Nature 9 Aug. 504/1 Light of wavelengths between 400 nm or 500–600 nm causes lesions through photodynamic action of porphyrin in the skin. 1977Ibid. 3 Nov. 15/3 The use of dye photosensitisers in research on the so-called photodynamic effect is an area in which an important role for 1Δg02 is beyond dispute.
Also ˌphotodyˈnamical a.; ˌphotodyˈnamically adv.; ˌphotodyˈnamics, that part of physics which deals with the energy of light, esp. in relation to growth or movement in plants.
1890Garnsey & Balfour tr. Sachs' Hist. Bot. iii. iii. 535 The movements of swarm-spores..must be ranked with these photodynamical phenomena. Ibid. 554 [Normal growth and the movements of protoplasm] two phenomena which also fall within the province of photodynamics. 1926E. Mayer Clin. Applic. Sunlight v. 87 With the exception of toluene-red and indigo-carmine, all dyes which stained staphylococci well, and were not toxic for them, were photodynamically active. 1954Jrnl. Bacteriol. LXVIII. 125/2 Photodynamically inactivated phage. 1967J. M. Hoskins Virol. Procedures xiii. 181 Neutral red is a photodynamically active dyestuff, and infected cells incubated in its presence in the light fail to yield normal plaques. |